package cn.itcast.bos.web.action.common;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;

import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.springframework.context.annotation.Scope;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;


public class BaseAction<T> extends ActionSupport implements ModelDriven<T>{
	
	//模型驱动
	protected T model;
	
	@Override
	public T getModel() {
		return model;
	}
	
	//构造器完成model实例化
	public BaseAction(){
		//构造子类Action对象，获取继承父类的泛型
		//AreaAction extend BaseAction<Area>
		//BaseAction<Area>
		Type genericSuperclass = this.getClass().getGenericSuperclass();
		
		//获取类型第一个泛型参数
		ParameterizedType parameterizedType = (ParameterizedType) genericSuperclass;
		Class<T> modelClass = (Class<T>) parameterizedType.getActualTypeArguments()[0];
		
		try {
			model = modelClass.newInstance();
		} catch (InstantiationException | IllegalAccessException e) {
			e.printStackTrace();
			System.out.println("模型构造失败。。。");
		}
	}
	
	//接收分页查询参数
	protected int page;
	protected int rows;

	public void setPage(int page) {
		this.page = page;
	}

	public void setRows(int rows) {
		this.rows = rows;
	}
	
	//将分页查询结果数据，压入栈值
	protected void pushPageDataToValueStack(Page<T> pageData){
		Map<String,Object> result = new HashMap<String , Object>();
			result.put("total", pageData.getTotalElements());
			result.put("rows", pageData.getContent());
			ActionContext.getContext().getValueStack().push(result);
	}

}
